5.1.1 Transformer
Digitrax recommends the PS515 power supply to power all DB150s. There are
many other transformers and power packs that can supply the input power for
the DB150. Check with your Digitrax dealer for suggestions. Most regular DC
model railroad power packs are not able to supply 5 amps to the DB150 boost-
er, because they were designed to run only 1 or 2 locomotives in a DC blocked
system. With DCC you’ll be running multiple locomotives in the same power
district so, you’ll need to provide more power to each district.
TABLE I: DB150 Transformer Requirements
Power to the DB150 should not be rapidly cycled ON-OFF-ON. When power
to the unit is switched off, wait 30 seconds before turning on the power again.
5.1.2 Heat Dissipation
It is normal for the DB150 to be warm to the touch when it is in use. It is
designed to absorb and dissipate the power difference between the input volt-
age and the selected scale output stabilized voltage, at the current load being
drawn. If the unit is not able to dissipate excess heat, over temperature thermal
shutdown may occur. We recommend that you locate the boosters in a location
where they can dissipate heat. If you experience frequent over temperature
shutdowns, add a small fan to help cool the booster.
5.2 Power On Indicator
This green LED indicates that the power to the DB150 is on.
5.3 Ground Terminal
The terminal marked ground provides electrical safety features and an RF
ground reference for minimum radiated noise. This should be the ONLY point
of any DB150 installation that is connected to the AC safety ground pin pro-
vided on most 3 pin 110V AC power sockets. Grounding the system is a sensi-
ble safety precaution that should not be ignored.
5.4 RAIL A & RAIL B Terminals
Connect these terminals to the track on all Digitrax boosters and command sta-
tions. If you are using more than one booster, always connect the same rail to
the same terminal on each booster, for example connect all Rail A terminals to
the right rail and all Rail B terminals to the left rail or vice versa on all track
sections.
AC or DC
AC 50/60Hz
DC
Max Input
20V RMS AC
28V DC
Min Input
12V AC
12V DC
Optimal Input Current
5 Amps
5 Amps
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